Disposable internal arteriovenous fistula puncture needle capable of conveniently returning cap

Abstract

The utility model discloses a disposable internal arteriovenous fistula puncture needle capable of conveniently returning a cap, which relates to the field of puncture needles and comprises a connecting hose, a needle seat is arranged at one end of the connecting hose, a puncture needle head is arranged at one end, far away from the connecting hose, of the needle seat, and the needle seat is provided with side wings extending towards the left side and the right side; the outer side of the connecting hose is sequentially sleeved with a protective cap and a protective sheath, and the protective cap is arranged in the protective sheath in a sliding mode. Under the action of the protective cap, immediate cap returning after needle withdrawal is completed is facilitated, the probability that a needle head is in contact with the outside is reduced, and the risks that blood of the needle head pollutes the environment and pricks are reduced; by means of the design of the protective sheath, the difficulty of one-hand cap returning operation is reduced, nursing personnel can push the sliding block through the thumb, the protective cap can be conveniently adjusted, one-hand cap returning is completed at a time, the cap returning efficiency and safety are improved, and by means of matched use of the protective sheath and the protective cap, the requirements of hemodialysis nursing operation are met.

Description

Technical Field

[0001] The utility model relates to the field of puncture needles, in particular to a disposable arteriovenous fistula puncture needle with a convenient recap. Background Art

[0002] Puncture needles are widely used in the medical field, covering almost all situations that require penetrating internal tissues for operations, including but not limited to blood draws, injections, biopsies, lumbar punctures, etc. In addition, with the advancement of medical technology, puncture needles are increasingly used in minimally invasive surgery, pain management, in vivo monitoring and other fields.

[0003] The development and application of puncture needles reflect the advancement of medical technology and the improvement of patient care. They are indispensable tools in modern medical practice. With the application of new materials and technologies, the design and function of puncture needles will continue to develop in the direction of safety and efficiency.

[0004] Arteriovenous fistulas are characterized by high intravascular pressure, a high risk of bleeding, and difficulty in stopping bleeding by applying pressure. Prior art methods, after the puncture needle is removed, use a compressed cotton ball to compress the puncture point and an elastic bandage to stop bleeding. The typical needle removal procedure involves pressing the cotton ball with one hand while holding the puncture needle with the other, using a finger to push the protective cap to protect the needle tip. This single-handed cap replacement process is cumbersome and difficult to push into place all at once, resulting in reduced efficiency, reduced safety, and interference with the other hand's pressing operation, increasing the risk of bleeding.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] In response to the problems in the related art, the present invention proposes a disposable arteriovenous fistula puncture needle with a convenient recap, so as to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in this utility model are as follows:

[0008] A disposable arteriovenous fistula puncture needle with a convenient retractable cap comprises a connecting hose, one end of which is provided with a needle seat, the end of the needle seat away from the connecting hose being provided with a puncture needle head, the needle seat having side wings extending to the left and right sides; a protective cap and a protective sheath are sequentially sleeved on the outer side of the connecting hose, and the protective cap is slidably arranged inside the protective sheath.

[0009] The protective cap is convenient to use and can be used as a tool for the treatment of various diseases, such as dermatitis, rheumatism, etc., to improve the treatment effect of the disease.

[0010] Furthermore, in order to ensure that the needle seat can drive the connecting hose to stably pass through the protective cap and improve overall work efficiency and safety, the connecting sleeve has a through hole suitable for the connecting hose to pass through.

[0011] The beneficial effects of the utility model are:

[0012] 1. Under the action of the protective cap, the utility model helps to immediately replace the cap after the needle is removed, reducing the chance of the needle contacting the outside world, reducing the risk of needle blood contaminating the environment and the risk of needlestick injuries.

[0013] 2. Through the design of the protective sheath, the utility model allows medical staff to easily and safely recap the protective cap with one hand, which simplifies the operation process and improves the efficiency and safety of recapping. The coordinated use of the protective sheath and the protective cap meets the needs of hemodialysis nursing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic structural diagram of a disposable arteriovenous fistula puncture needle with a portable recap according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the expanded structure of a disposable arteriovenous fistula puncture needle with a portable retractable cap according to an embodiment of the utility model;

[0017] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0018] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0019] In the picture:

[0020] 1. Connecting hose; 2. Needle seat; 3. Puncture needle; 4. Protective cap; 401. Lower mounting shell; 402. Upper mounting shell; 403. Connecting sleeve; 4031. Through hole; 404. Arc-shaped notch 1; 405. Stopper; 406. Arc-shaped protrusion; 407. Limiting groove; 408. Arc-shaped notch 2; 409. Gap; 410. Slider; 5. Protective sheath; 501. Slide groove. DETAILED DESCRIPTION

[0021] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] According to an embodiment of the present utility model, a disposable arteriovenous fistula puncture needle with a convenient recap is provided.

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 4 As shown, the puncture needle with a portable retractable cap according to an embodiment of the utility model includes a connecting hose 1, a needle seat 2 is provided at one end of the connecting hose 1, a puncture needle head 3 is provided at the end of the needle seat 2 away from the connecting hose 1, and the needle seat 2 has side wings extending to the left and right sides; a protective cap 4 and a protective sheath 5 are sequentially sleeved on the outer side of the connecting hose 1, and the protective cap 4 is slidably arranged in the protective sheath 5.

[0024] With the help of the above technical solution, the utility model, under the action of the protective cap 4, helps to complete the immediate cap replacement after the needle is removed, reduces the chance of the needle contacting the outside world, reduces the risk of needle blood contaminating the environment and needlestick injuries, and through the design of the protective sheath 5, medical staff can easily replace the protective cap 4, and achieve needle protection without direct contact with the needle, simplifying the operating process, and improving the efficiency and safety of cap replacement. The coordinated use of the protective sheath 5 and the protective cap 4 can meet the needs of hemodialysis nursing operations.

[0025] In one embodiment, for the above-mentioned protective cap 4, the protective cap 4 includes an upper mounting shell 402 and a lower mounting shell 401 arranged on the upper and lower sides of the connecting hose 1, and the tails of the upper mounting shell 402 and the lower mounting shell 401 are connected together through a connecting sleeve 403 and a limiting groove 407 for limiting the needle seat 2 is provided at the connection. A gap 409 is formed between the upper mounting shell 402 and the lower mounting shell 401 for the side wing of the needle seat 2 to enter and reach the limiting groove 407. A sliding groove 501 is provided on the upper surface of the protective sheath 5, and a slider 410 embedded in the sliding groove 501 is provided on the upper surface of the protective cap 4. The front side of the top of the upper mounting shell 402 is provided with a The arc-shaped notch 2 408 is the upper guide part, and the front end of the lower mounting shell 401 is provided with an arc-shaped notch 1 404 as the lower guide part. The tail end of the arc-shaped notch 1 404 is provided with a stopper 405 for hooking the side wing of the needle seat 2 to prevent the needle seat 2 from sliding out. The rear end of the lower mounting shell 401 is provided with an arc-shaped protrusion 406 as a stop part, and the limiting groove 407 is located behind the arc-shaped protrusion 406. Therefore, under the action of the protective cap 4, not only the needle seat 2 can be fixed, but also the puncture needle needle 3 can be protected, which helps to avoid accidental damage to the needle when it is not in use, reduces the chance of the needle contacting the outside world, and reduces the risk of cross infection.

[0026] In one embodiment, the connecting sleeve 403 has a through hole 4031 suitable for the connecting hose 1 to pass through, thereby ensuring that the needle seat 2 can drive the connecting hose 1 to pass through the protective cap 4 stably, thereby improving overall work efficiency.

[0027] The working principle of the protective sheath 5 and the protective cap 4 is as follows: first, hold the protective sheath 5 and push the slider 410 at the top of the protective cap 4 with force, and with the cooperation of the slide groove 501, ensure the stable sliding of the slider 410, thereby pushing the protective cap 4 out of the protective sheath 5. During the movement of the protective cap 4, it moves along the outside of the connecting hose 1 toward the needle seat 2, and uses the arc-shaped notch 404 of the lower mounting shell 401 to cooperate with the side wings on both sides of the needle seat 2 to slide to the position of the stopper 405, and pass through the stopper 405, slide to the bottom of the arc-shaped protrusion 406 in the lower mounting shell 401, and fix the entire needle seat 2 in the position of the limit groove 407, and use the mutual cooperation of the upper mounting shell 402 and the lower mounting shell 401 to fix the puncture needle needle 3.

[0028] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0029] In actual application, first hold the protective sheath 5 with your hand, and use the protective sheath 5 to drive the protective cap 4 to slide on the outside of the connecting hose 1, so that under the action of the protective cap 4, the needle seat 2 is fixed and the puncture needle needle 3 is quickly recapped.

[0030] The working principles of the protective sheath 5 and the protective cap 4 are as described above.

[0031] To sum up, with the help of the above-mentioned technical scheme of the present invention, the present invention, under the action of the protective cap 4, helps to complete the immediate cap replacement after the needle is removed, reduces the chance of the needle contacting the outside world, reduces the risk of needle blood contaminating the environment and needlestick injuries, and through the design of the protective sheath 5, medical staff can easily replace the protective cap 4, and achieve needle protection without direct contact with the needle, simplifying the operating process, and improving the efficiency and safety of cap replacement. Through the coordinated use of the protective sheath 5 and the protective cap 4, the needs of hemodialysis nursing operations can be met.

[0032] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A disposable arteriovenous fistula puncture needle with a convenient recap, comprising a connecting hose (1), characterized in that: A needle seat (2) is provided at one end of the connecting hose (1), a puncture needle (3) is provided at one end of the needle seat (2) away from the connecting hose (1), and the needle seat (2) has side wings extending to the left and right sides; The outer side of the connecting hose (1) is sequentially covered with a protective cap (4) and a protective sheath (5), and the protective cap (4) is slidably arranged in the protective sheath (5); The protective cap (4) comprises an upper mounting shell (402) and a lower mounting shell (401) arranged on the upper and lower sides of the connecting hose (1); the tails of the upper mounting shell (402) and the lower mounting shell (401) are connected together through a connecting sleeve (403); and a limiting groove (407) for limiting the position of the needle seat (2) is provided at the connection point; a gap (409) is formed between the upper mounting shell (402) and the lower mounting shell (401) for the side wings of the needle seat (2) to enter and reach the limiting groove (407).

2. A disposable arteriovenous fistula puncture needle with a portable recap according to claim 1, characterized in that: A sliding groove (501) is provided on the upper surface of the protective sheath (5), and a sliding block (410) embedded in the sliding groove (501) is provided on the upper surface of the protective cap (4).

3. A disposable arteriovenous fistula puncture needle with a portable recap according to claim 2, characterized in that: The top front side of the upper mounting shell (402) is provided with a second arc-shaped notch (408) serving as an upper guide portion, and the front end of the lower mounting shell (401) is provided with a first arc-shaped notch (404) serving as a lower guide portion.

4. A disposable arteriovenous fistula puncture needle with a portable recap according to claim 3, characterized in that: The tail end of the arc-shaped notch 1 (404) is provided with a stopper (405) for hooking the side wing of the needle seat (2) to prevent the needle seat (2) from sliding out.

5. The disposable arteriovenous fistula puncture needle with a portable recap according to claim 4, characterized in that: The rear end of the lower mounting shell (401) is provided with an arc-shaped protrusion (406) serving as a stopper, and the limiting groove (407) is located behind the arc-shaped protrusion (406).

6. The disposable arteriovenous fistula puncture needle with a portable recap according to claim 5, characterized in that: The connecting sleeve (403) has a through hole (4031) suitable for the connecting hose (1) to pass through.

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